know-it-all
More pronunciations (1)Fewer pronunciations
Australia/ˈnəʉ.ɪt.oːl/
know-it-all noun: someone who claims to be knowledgeable or an expert in something, obnoxiously dismissing the opinions, advice, suggestions, etc. of others.
Noun
know-it-all (plural know-it-alls)
- Someone who claims to be knowledgeable or an expert in something, obnoxiously dismissing the opinions, advice, suggestions, etc. of others.
- We had it all figured out, but this know-it-all marched in with "the correct way of solving it", leaving our experiment in shambles.
- The same holds true for supporting details—they help you to learn more about a topic. Be a know it all by sharing these details and supporting details with friends.2004, Princeton Review, Know It All! Grades 9-12 Reading, The Princeton Review, →ISBN, page 22
- Synonyms:
- Buddha, clever clogs, clever dick, know-all, smart aleck, smart ass, smarty, smarty pants, wiseacre, wiseass
know-it-all meaning in Arabic, Malay, Indonesian and Persian
know-it-all in Arabic
- one who obnoxiously claims to be knowledgeable on a subject
- مُتَعَالِم mutaʕālim
know-it-all in Malay
- one who obnoxiously claims to be knowledgeable on a subject
- palatao
know-it-all in Indonesian
- one who obnoxiously claims to be knowledgeable on a subject
- sok pintar, sok tau
know-it-all in Persian
- one who obnoxiously claims to be knowledgeable on a subject
- علامه دهر 'allâme-ye dahr
Synonyms of know-it-all
2 more synonymsFewer synonyms
Antonyms
- wise person
Forms of know-it-all
| plural | know-it-alls |
|---|---|
| alternative Commonwealth Ireland UK | know-all |
Origin of know-it-all
From know + it + all.
Words formed from know-it-all
Questions about know-it-all
- What does know-it-all mean?
- Know-it-all means someone who claims to be knowledgeable or an expert in something, obnoxiously dismissing the opinions, advice, suggestions, etc. of others.
- What is know-it-all in Arabic?
- Know-it-all in Arabic is مُتَعَالِم (mutaʕālim). See Know-it-all meaning in Arabic.
- What part of speech is know-it-all?
- Know-it-all is a noun.
- How do you pronounce know-it-all?
- Know-it-all is pronounced /ˈnəʉ.ɪt.oːl/ (Australia).
- What is the plural of know-it-all?
- The plural of know-it-all is know-it-alls.
Words near know-it-all in the dictionary
Source and license
Adapted from Wiktionary: know-it-all (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
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Cite this entry: “know-it-all.” Word.ws, https://word.ws/know-it-all. Based on Wiktionary, CC BY-SA 4.0.